Supplementary operating instructions A2553.8.1E / 5 KRT – Guide Rails Series Size Motor Size Material KRT DN80...DN200 (excludes 200-500,200-501 and 200-631) 82...232 (2 pole) 24...1554 (4 pole) 46...1006 (6 pole) G (Cast Iron) Submersible motor pumps with guide rails These operating instructions contain fundamental information and precautionary notes. It is absolutely necessary to read them thoroughly prior to installation and first commissioning. This manual has to be used together with the operating instructions for the pump at all times
These operating instructions contain fundamental information and precautionary notes.It is absolutely necessary to read them thoroughly prior to installation and first commissioning.This manual has to be used together with the operating instructions for the pump at all times
Persons are not permitted to enter a confined space withoutspecific precautions taken in accordance with currentstandards.
1.2 Checks prior to installation and firstcommissioning
Construction layout must be in accordance with themeasurements set out in the dimensions table. Determine thecorrect anchorage position of the discharge elbow, 72-1 so theguide rails (not included in the KSB scope of supply) wheninstalled, will run parallel and plumb.The construction of the concrete should be of sufficient strengthto ensure a safe and functional installation. The concretefoundation must have set before installing the discharge elbow,72-1. The surface must be level and even.
1.2.1 Notes
Also take into account the upper guide rail brackets.Dimensions and space requirements are given in the dimensiontable. Fix the upper guide rail bracket by means of stainlesssteel anchor bolts (anchor bolts are not included in the KSBscope of supply) at the edge of the sump opening. Dataconcerning borehole diameters and depth as well as the holepattern of the bracket are to be determined by the contractor.
Never fasten the brackets directly to a curved sump wall.
Dimensions for guide rail installations are given in thedimension table. Additional dimensions can be found in theKRT operating manual.
1.3 Installation of the pump/unit
Inspect the pump and power/control cable for transportdamages prior to installation. Check it as described in thesection “ First Commissioning” of the operating instructions. Aseparate data plate for the pump and motor data is included inthe KSB scope of supply. The extra data plate should be fixedoutside the pump sump (e.g. control cabinet,) so that it isclearly visible.
1.3.1 Assembly of the installation kit
The following installations kits are available for assembly/installation of the KRT pump unit:- Stationary wet-well installation with guide cable
(see operating instructions of the pump)- Portable installation
(see operating instructions of the pump)- Stationary wet-well installation with guide rails
(see present supplementary instructions)
1.4 Stationary wet-well installation with guiderails.
1.4.1 Description
In a stationary wet-well installation, the pump unit can belowered and lifted out of the pump sump by means of guiderails at any liquid level in the sump. Safely guided by 2 verticalguide rails, the pump slides into the sump or tank and attachesitself automatically to the discharge elbow fixed at the bottom.Sealing between the pump and discharge elbow is achieved bythe weight of the pump. A profile gasket between the pump anddischarge elbow assures a water tight leak-proof connection.There is no need to enter the sump for maintenance andinspection of the pump.
1.4.2 Installation of the guide claw
Fit the guide claw to the discharge nozzle of the pump.Do not forget to place the washers 550.35 under the hex nuts920.35. Nuts must be evenly tightened according toinstructions:
Tightening torque:M16 (A4-70) with DN40, 80 and 100 : 111 lbf-ft (150Nm)M20 (A4-70) with DN 150 and 200 : 214 lbf-ft (290Nm)
Sealing between the guide claw 732 and discharge elbow 72-1is accomplished by a profile gasket – 410 (DN 80....150) orround cord – 99-6 (DN 200).
The entire assembly has been pre-assembled at the factory.
Construction of the concrete foundation has to be of sufficientstrength to ensure safe and functional fixing of the guide railsystem and the discharge elbow
Level and anchor the discharge elbow 72-1. The guide railsmust be installed absolutely parallel and plumb.
KRT 80, 100 and 150’s require 2” diameter guide rails, schedule40 or 80 (supplied by others). KRT 200’s require 3” diameterguide rails, schedule 40 or 80 (supplied by others).
Mount the bottom guide rail brackets 718 on the dischargeelbow 72-1 according to the outline drawing item 3 in such away that dimension “ G “ between the guide rails centerlinesand the centerline of the discharge elbow is complied with.Fix each bottom guide rail bracket 718 with:
• Screw 914.1/.2 (for DN 80....200)Data concerning tightening torques of screw 914.1/.2:M12 (A4-70) for DN80 and DN100: 44 lbf-ft (60Nm)M16 (A4-70) for DN150 and DN200: 111 lbf-ft (150Nm)
The installation of the bottom guide rails bracket ,718, iscompleted after tightening the anchor bolts (not in the KSBscope of supply) for the discharge elbow 72-1.
Continue with the installation and fitting of the discharge pipe tothe discharge elbow.
Install the guide rails (not included in the KSB scope of supply)onto the bottom guide rails brackets 718 at the discharge elbow72-1Cut and fit the guide rails to required lengths.
See the exploded view drawing attached for more details.
KRT – Guide Rails
4
CAUTION ! Make sure the guide rails are absolutelyplumb; it is important for thesuspension and guidance of the pumpduring installation!
In case of deeper installations the scope of supply may includeintermediate brackets that will function as spacers between theguide rails. It depends on the construction whether a support atthe discharge pipe or sump wall becomes necessary.
1.4.4 Installation of the Lifting Chain / Lifting Cable orRope on Motor Housing
The chain of all sizes is attached to the top of the motor casingtoward the back and opposite the discharge nozzle using ashackle 59-17. Depending on the motor and hydrauliccombination, the pump will be suspended from this point with aninclination of approx. 5-10 degrees. This guarantees a problem– free lowering of the pump, provided that the suspension pointof the lifting equipment is directly above the pump.
Caution: Skewed lifting is to be avoided as it may causejamming of the pump guide claw to the guide rails.
1.4.5. Installation of the pump
Please check, prior to the installation of the pump, dimension Gand S according to the table provided under “3. OutlineDrawing“ Of utmost importance is the perfectly verticalinstallation of the guide rails. This work has to be done prior tothe introduction of the pumped liquid into the sump to guaranteea smooth lowering and lifting of the pump. Afterwards, correctassembly slips or misalignments if any. Guide the pump fromabove over the bracket, the pump will attach itself automaticallyto the discharge elbow 72-1 and will be connected to thedischarge pipe and ready for operation. Attach the lifting chainto the hook on the upper guide bar bracket or at the edge of thetank in an appropriate manner.
1.4.6 Increaser Installation
For installation of discharge elbow with increasers see downthe drawing for proper dimensioning and placement.
Kits Denominations Part no. Part Description Qt718.1 Right Bottom guide rail bracket 1 Notes718.2 Left Bottom guide rail bracket 1 1-) Only applied for sizes 100-200914.1 Socket head cap screw 1 2-) Except for sizes 100-200914.2 Socket head cap screw 1 3-) Only applied for size DN 20072-1 Discharge Elbow 1 4-) Except for size DN 200932.1 Circlip 1 5-) For sizes 80-200, 80-251 and 80-315, 4 pieces
Bottom Guide RailBracket Kit
932.2 Circlip 1 6-) Do not grout under part number 718.1 and 718.2550.35 Washer 8 5 )
732 Claw 1914.35 Socket head cap screw1 ) 4902.35 Stud 2 ) 8 5 )
